html,
body,
#app {
  margin: 0;
  padding: 0;
  height: 100vh;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", Avenir, "Helvetica Neue", Helvetica,
    Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
  font-size: 16px;
  color: #333;
  line-height: 1;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background: #f5f9f9;;
}

 .ml-6 {
    margin-left: 6px;
 }
 .ml-10 {
  margin-left: 10px;
 }
 .ml-16 {
   margin-left: 16px;
 }
 .mr-10 {
    margin-right: 10px
 }
 .mb-20 {
  margin-bottom: 20px;
 }

 li {
  list-style: none;
 }
 ul {
  padding: 0;
  margin: 0;
 }
 h2,h4 {
  margin: 0;
 }
 a {
    text-decoration: none;
 }